jdk8-mips64-public/hotspot: src/share/vm/classfile/resolutionErrors.hpp@8c95980d0b66

     1 /*

     2  * Copyright (c) 2005, 2014, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  *

    23  */

    25 #ifndef SHARE_VM_CLASSFILE_RESOLUTIONERRORS_HPP

    26 #define SHARE_VM_CLASSFILE_RESOLUTIONERRORS_HPP

    28 #include "oops/constantPool.hpp"

    29 #include "utilities/hashtable.hpp"

    31 class ResolutionErrorEntry;

    33 // ResolutionError objects are used to record errors encountered during

    34 // constant pool resolution (JVMS 5.4.3).

    36 class ResolutionErrorTable : public Hashtable<ConstantPool*, mtClass> {

    38 public:

    39   ResolutionErrorTable(int table_size);

    41   ResolutionErrorEntry* new_entry(int hash, ConstantPool* pool, int cp_index,

    42                                   Symbol* error, Symbol* message);

    43   void free_entry(ResolutionErrorEntry *entry);

    45   ResolutionErrorEntry* bucket(int i) {

    46     return (ResolutionErrorEntry*)Hashtable<ConstantPool*, mtClass>::bucket(i);

    47   }

    49   ResolutionErrorEntry** bucket_addr(int i) {

    50     return (ResolutionErrorEntry**)Hashtable<ConstantPool*, mtClass>::bucket_addr(i);

    51   }

    53   void add_entry(int index, ResolutionErrorEntry* new_entry) {

    54     Hashtable<ConstantPool*, mtClass>::add_entry(index,

    55       (HashtableEntry<ConstantPool*, mtClass>*)new_entry);

    56   }

    58   void add_entry(int index, unsigned int hash,

    59                  constantPoolHandle pool, int which, Symbol* error, Symbol* message);

    62   // find error given the constant pool and constant pool index

    63   ResolutionErrorEntry* find_entry(int index, unsigned int hash,

    64                                    constantPoolHandle pool, int cp_index);

    67   unsigned int compute_hash(constantPoolHandle pool, int cp_index) {

    68     return (unsigned int) pool->identity_hash() + cp_index;

    69   }

    71   // purges unloaded entries from the table

    72   void purge_resolution_errors();

    74   // RedefineClasses support - remove obsolete constant pool entry

    75   void delete_entry(ConstantPool* c);

    76 };

    79 class ResolutionErrorEntry : public HashtableEntry<ConstantPool*, mtClass> {

    80  private:

    81   int               _cp_index;

    82   Symbol*           _error;

    83   Symbol*           _message;

    85  public:

    86   ConstantPool*      pool() const               { return literal(); }

    88   int                cp_index() const           { return _cp_index; }

    89   void               set_cp_index(int cp_index) { _cp_index = cp_index; }

    91   Symbol*            error() const              { return _error; }

    92   void               set_error(Symbol* e);

    94   Symbol*            message() const            { return _message; }

    95   void               set_message(Symbol* c);

    97   ResolutionErrorEntry* next() const {

    98     return (ResolutionErrorEntry*)HashtableEntry<ConstantPool*, mtClass>::next();

    99   }

   101   ResolutionErrorEntry** next_addr() {

   102     return (ResolutionErrorEntry**)HashtableEntry<ConstantPool*, mtClass>::next_addr();

   103   }

   104 };

   106 #endif // SHARE_VM_CLASSFILE_RESOLUTIONERRORS_HPP

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